Exercise platform



FIG. 1 is a top plan view of an exercise platform showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right elevation view thereof, the opposite side being a mirror image of the shown;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a cross-section view thereof taken along line 6-6 of FIG. 1.

The broken lines illustrate portions of the exercise platform which form no part of the claimed design. 

The ornamental design for an exercise platform, as shown and described. 